For the summon mob that spawns with Spelunker Armor, Cave Crawler and Mystery Armor, see MCD:Bat.
Bats are unattackable mobs in Minecraft Dungeons that spawn in some levels for decoration.
Spawning
The bat can be found in the Creeper Woods and in the Overgrown Temple.
Behavior
Bats seem to appear in dark areas and start flying around when the player gets close.